Bridge or bar for tohairing fur-skins



F. M. WEGNER. BRIDGE 0R BAR FOR UNHAIRING FUR SKINS.

APPLICATION FILED SEPT. 4. 1911;

Patented May 27, 1919.

FERDINAND M. WEGNER, or BROOKLYN, NEW YORK.

BRIDGE 0R BAR FOR UNI-IAIRING FUR-SKINS.

Specification of Letters Patent. Ptntedhlay 27,1919.

Application led September 4, 1917 Serial No. 189,642.

To all whom t may concer/n.:

Be it known that I, FERDINAND M. WEG- NER, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented a new and useful Bridge or Bar for Unhairing Fur-Skins, of which the following is a specication.

My invention relates to improvements in a bridge or bar for unhairing fur skins, over which the conveyer passes with fur skins attached thereto, and above which bridge the operation of clipping or cutting the coarse hair of the sln is performed by suitable knives, as described and illustrated in my patent issued Oct. 9, 1917, No. 1,242,400, or in any other machine for that purpose.

-My invention consists in the novel features hereinafter more fully described.

The objects of my improvement are:

First: to enable the operator of the machine to cut or clip the hair of the central part of the skin without clipping the hair on either or both sides ofthe center.

Second: to accomplish the elimination of the side or sides of the skin from. clipping readily, neatly and without subjecting the skin to the danger of being cut.

Third: to have said elimination accom- A plished by a device or mechanism, which is simple, durable and inexpensive.

I attain these objects by the adjustable bridge or bar illustrated in the accompanying drawings or by any mechanical equivalent or obvious modification of the same within the scope of my invention.

Figure 1 is a rear elevation of a specimen of my adjustable bridge bar.

Fig. 2 is a rear elevation of the same specimenwith parts cut away showing the keys drawnin.

, -l Fig. 3 is ahorizontal section viewed from beneath on line 3 3 of Fig. 1.

Figs. 4 and 5 are vertical cross-sections on lines 4,-4 and 5-5 respectively of Fig. 1. 'Figs. 6.and 7 are vertical crosssections taken on lines 6 6 and 7-7 respectively of Fig. 2.

. Similar characters refer to similar parts throughout the several views.V 11 designates the body ofthe bridge or bar, having at each .end the neck12,which, is adapted to fit the frame of the machine for unhairingfur skins'. On the rear side of the body 11 of the bridge I provide the channel 21, which extends from. end to end of the bridge 11 and the necks 12; said channel is shown as deeper in a horizontal direction at the left end of said bar 11 than at the right end, for the purpose hereinafter described.

In said channel 21 are located the keys19 and 20, each of which has a higher portion and a depressed portion, also a head, which abuts against one of the necks1`2.

Said keys are shown in Fig. 3 as situated in parallel planes and adapted topass each other, the key 19 being situated on the side of the channel 21, which is at the front o-f the bridge or bar, and the key 20 on the remote side thereof. Said bridge orv bar 11 has also two broad grooves on the front thereof extending from the top to the bottom of said bar 11; said two grooves extend each lengthwise from the middle portion of said bar 11, which contains about one third of the length of the bar, to the narrow shoulder 1 1a adjacent to the neck 12 at each end of the bridge.

In said broad grooves are located the movable sections 13, 14, 15 and 16 at one end of the bridge, and the sections 13?, 14a, 15a and Vshown in Fig. 3 at the right end of the bridge, wherethey are cut through the solid web which `intervenes between the movable sections 13a, `142-15a and 16a andthe groove 21; at -the left Aend of the bridge the recesses extend only to the top ofthe groove 21, which communicates at this endof the bridge withthe lbroad groove in which the sections 13, ,14, 15 and 16 are located.

l It is evident that, when 4-said keys 19 and 20j are moved inwardly into(l the position shown in Fig. 2,;the depressed, portion in each of said keys 194 and20 will allow said pins 17- to dropto the surfacesof said depressions,as shownin Fig. 12,thereby causing said movable sections to .drop on the front. of the bridge or bar; this will cause the portionof 4the conveyer supported by the endsof the bar to`be lowered also, thereby preventing'the knives from 4cutting the ios hair of that portion of the fur skin, which is over said ends of the bridge.

It is also evident that, by moving each of the keys 19 and 2O through only a part of its stroke, only some of the movable sections may be dropped, in this way affording a means for adjustment and variation in the extent of the elimination of the fur skin from the action of the knives of the unhairing machine.

The movable sections are also shown as progressively varying in width, the broader' sections being located toward the outside, and the narrower sections are placed toward the inside of the machine, thereby making the adjustment more sensitive near the central part of the` skin than on the edges thereof.

To keep said keys 19 and 20 from being removed from the groove 21 lengthwise thereof, the stop pins 18 and 1Sa are secured through the body of each of the necks 12, said stop pins 18 and 18a extend over the depressed portions of said keys 1-9 and 20, and they abut against ythe higher portion of each of said keys 19 and 20 when said keys are moved to the limit of their outward positions, as shown in Fig. 1.

To keep said keys 19 and 20 in place in said channel 21 at the rear of said bridge, I provide the plate 22.

The plate 23 is also provided on the front of the bridge, to keep said. movable sections from being tilted forward and to act as a guide for the same.

Said plate 22 has the pins 24 secured thereto, as shown in Fig. 8, which pins serve to keep the key 19 on the side of the channel 2l, which is at the front of the bridge or bar.

The inner ends of said keys 19 and 20 are shown in Fig. 3 as tapered, so as to enable the keys to pass each other readily on their inward stroke.

Many changes could be made in the design and details of myadjustable bridge or barI for fur unhairing machines without departing from the main scope of my invention; I do not, therefore, restrict myself to the design and details as shown in the drawings; but I intend to include also all mechanical equivalents and reasonably obvious modifications of the same.

Vhat I claim as my invention, and desire to secure by Letters Patent is:

1. In a machine for unhairing fur skins a bridge or bar for passing fur skins thereover, said bridge or bar containing one or more movable sections slidably connected to the front of the bridge, transversely thereto, one or more keys having each a raised portion and a depressed portion, said keys being located at the rear of said sections and lengthwise of said bridge or bar, and a pin secured to each of said sections, said pins extending over said keys and resting thereon, thereby causing said sections to be-moved into and out of operating position by the motion of said key or keys.

2. In a machine for unhairing fur skins the combination of a bridge or bar comprising a plurality of movable sections slidably connected to the front of thebridge bar and adapted to move transversely thereto, and keys located at the rear of said bridge bar and adapted to move lengthwise thereof, said keys having each a raised portion and a depressed portion and said sections being in sliding contact with said keys and resting thereon, thereby being adapted to be moved into and out of operating position by the motion of said keys.

3. In a machine for unhairing fur skins the combination of a bridge bar comprising a plurality of movable sections slidably connected to the front of the bridge bar and adapted to move transversely thereto, and keys slidably connected to said bridge bar and adapted to move lengthwise thereof, said keys having each a raised portion and a depressed portion, and said sections being in sliding contact with said keys, thereby being adapted to be moved into and out of operating position by the motion of said ke s. In a machine for unhairing fur skins the combination of a bridge or bar comprising a series of movable sections slidably connected to the front of said bridge bar and adapted to move transversely thereto, and keys slidably connected to said bridge bar and adapted to move lengthwise thereof, the dimensions of said sections parallel to the length of said bridge or bar being progressively smaller toward the center of said bridge bar, the dimensions of said keys in the direction of motion of said sections being variable, and said sections being in sliding contact with said keys, thereby being adapted to be successively moved linto and out of operating position by the motion of said keys.

5. In a machine for unhairing fur skins the combination of a bridge or bar comprisconnected to the front of said bridge bar and adapted to move lengthwise thereof, the dimensions of said keys in the direction of motion of said sections being variable, and said sections being in sliding contact with said keys, thereby being adapted to be successively moved into and out of operating position by the motion of said keys.

6. In a machine for unhairing fur skins the combination of a bridge or bar comprising a plurality of movable sections, slidably connected to the front of the bridge bar and adapted to move transversely thereto, keys slidably connected to said bridge bar and adapted to move lengthwise thereof, said keys being in sliding contact ,with said sec-` ing a series of movable sections slidably` tions, and the dimensions of said keys in the direction of motion of said sections being variable, thereby causing said sections to be brought into and out of operating position, and a stop for limiting the outward motion of each of said keys to prevent their being disconnected from said bridge bar, being secured to said bridge bar.

7. In a machine for unhairing fur skins the combination o a bridge or bar comprising a plurality of movable sections slidably Copies of this patent may be obtained for said stop connected to the a channel in the front of the brid e bar, body of said bri ge bar lengthwise thereof and keys located in said channel and adapted to move lengthwise thereof, said keys 15 being in sliding contact with said sections and the dimensions of said keys in the direction of motion of said sections being variable thereby causing said sections to be brought into andout of op- 20 erating position.

FERDINAND M. WEGNER.

Washington, D. 0.

commissioner of ratentl. 

